encoder, decoder, and methods for backward compatible multiresolution spatial audio object encoding

摘要

"Encoder, decoder and methods for spatial audio object coding for regression compatible back resolution" a decoder for generating an unmixed audio signal comprising a plurality of unmixed audio channels is provided. In addition, an encoder and an encoded audio signal is provided. the decoder comprises an unmixed information determiner for determining unmixed information upon receiving the first parametric additional information on at least one audio object signal and the second parametric additional information on at least one audio object signal characterized in that the frequency resolution of the second parametric additional information is higher than the frequency resolution of the first parametric additional information. furthermore, the decoder comprises an unmixed module for applying unmixed information to a downmix signal, indicating a downmix of at least one audio object signal to obtain an unmixed audio signal, comprising the plurality of channels of unmixed audio. the unmixed information determiner is configured to determine unmixed information by modifying the first parametric information and the second parametric information to obtain the modified parametric information, so that the modified parametric information has a frequency resolution that is higher than the first frequency resolution.